Electric heater.



PATENTED NOV. 22, 1904.

' E. P. WEGGEN.

ELECTRIC HEATER.

APPLICATION FILED APR. 22, 1904.- v

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'PATEiITBD NOV. 22, 1904.

B. P. WEGGEN.

ELECTRIC HEATER. APPLICATION rum APR. 22., 1904.

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I Patented November 22, 1904:.

UNITED STATES PATENT OEEICE.

EDIVARD PAUL IVEGGEN, OF JEFFERSON CITY, MISSOURI, ASSIGNOR OFTWO-THIRDS TO CHARLES TVVEEDIE, OF JEFFERSON CITY, MISSOURI, AND WILLIAMJ. SCHOTT, OF TOPEKA, KANSAS.

ELECTRIC HEATER.

SPECIFICATION forming part of Letters Patent No. 775,714, dated November22, 1904.

Application filed April 22, 1904. Serial No. 204,39 L (No model.)

To all whmn it Duty concern.-

Be it known that I, EDWARD PAUL WEeeEN, a citizen of the United States,and a resident of Jefferson City, in the county of Cole and State ofMissouri, have invented a new and Improved Electric Heater, of which thefollowing is a full, clear, and exact description.

My invention relates to electric heaters admitting of general use, butmore particularly I to a type of heater used to a great extent in theboot, shoe, and leather-working trades, but capable of other uses, aswill be apparent.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the figures.

Figure l is a perspective view showing one form of my heater ready forservice. F ig'; 2 is a plan view of the same, showing the heating partsin section. Fig. 3 is an enlarged section showing the manner ofinsulating the heating-wires. Fig. 4 is a vertical cross-section throughanother form of my heater, taken upon the line 4. t of Fig. 5 looking inthe direction of the arrow. Fig. 5 is a horizontal section upon the line5 5 of Fig. 4: looking in the direction of the arrow, and Fig. 6 is adiagram of the wiring used in the structure.

represented in Figs. 4 and 5.

dispensed with, a resistance-coil serving the oint purpose of ralsingthe temperature and of cutting down the current to a suitable de gree,the wiring being such that the length of.

the resistance-wire thrown into the circuit of the heating-coils isadjustable within certain limits.

The casing 7 is provided with feet 8, whereby the same is supported, andis also pro- 4 vided with heads 9 10, secured is position by means ofscrewsv 11. Mounted within the head 9 by means of a thread 13 is a cup12, of iron, provided with a bottom 14:, secured thereto by means of athread 15, as shown more particularly in Fig. 2. A copper lining 16 isdisposed within the iron cup 12 and is spread outward so as to form aflange 17. A

By the use of my invention a rheostat is washer 18, of insulatingmaterial, is disposed immediately adjacent to the head 9 and isencircled by a coil 19, of resistance-wire, made, for 5 0 instance, ofGerman silver or of some alloy thereof, the different layers of thisresistancewirc being separated by cylinders 20, ofinsulating material,or in any equivalent manner. The winding 19 is encircled byamass 10, ofcomminuted asbestos, which is filled into the casing, as indicated inFig. 2. A number of wires 21 22 are connected at different points 32 33with the outer layer of wire, as indicated in the figure just mentioned.These wires are also connected with buttons 23, 24, and 25, distributed,preferably, in the form of a semicircle, as indicated in Fig. l. Aradially-movable arm 26 is free to move consecutively over these buttonsand is pivotally 5 mounted upon a post 27, serving as a bindingpost.This bindingpost, together with a binding-post 28, is connected, bymeans of wires 29 30, with a suitable source of electricity 31--such,for instance, as a dynamo. 7 By turning the arm 26 so as to bring thesame into engagement with the different buttons successively the lengthof the resistance-wire included in the active portion of the circuit maybe varied; but the inner layers of wire are not disturbed, the currentalways passing through them when the device is in operation. By thisarrangement any inequality of heating due to the exclusion of certainportions of the winding used for cutting resistance out or not is in theextreme layer, where it does not affect the uniformity of the heat asdistributed throughout the cup 12 and the lining 16. In other words, theinequalities of temperature due to adjustment are caused to take 5 placeat a point where their abruptness is reduced to a minimum. 7

The form of heater just described is of poculiar value to boot and shoefactories for the purpose of heating the tools used for re- 9 movingwrinkles from the toes or tips of boots and shoes or for leveling up anybulge or depression in the boot or shoe while the the same is yet dampand on the last. This r paratively cool this section of wire, beingdisform of heater is also of great value in boiling water, in cooking,in heating solderingirons, and like purposes.

In the form shown in Figs. 4:, 5, and 6 the casing 34 is mounted uponfeet 35 and is provided with a top 36, having integral portions 37 ofsubstantially U shape in cross-section and depending therefrom, asindicated in Fig. 4. The casing 34 is provided with heads 38, 1 made ofiron, engaging these depending portions, as indicated in Figs. 4c and 5.The windings 39 are preferably elliptical in crosssection and encirclethe respective cores LO, made of iron. From adynamo 41 or equival lentsource of electricity a wire 42 leads to a movable arm 4:3, this armbeing movable radil ally by hand, so as to successively engage the 1several buttons 4 An idle button M is also provided for totallyexcluding the currentfrom the coils. From the buttons 4L4: wires 4:5 46i run to the coils, as shown more particularly 1 in Figs. 5 and 6. Theother terminal of the dynamo, 4:1, is connected, by means of wiring48,with the outer ends of the respective windings 39, the several pointsof connection bei ing indicated in Fig. 3 by the numeral 50. The wiresa5 are respectively connected with the loops 51, 52, 53, 54, and 55, allof which are disposed in the innermost layer of the respective windings.It will be noted that by this arrangement not only are the severalwindings connected in parallel with respect to i the dynamo and switch,but that the windings 1 are all adjustable simultaneously-that is tosay, a movement of the switch-arm 4k?) in cutting down the current inone necessarily cuts down the current in the others. The casing 3a isfilled with comminuted asbestos 56, which partially encircles theseveral coils. It will be noted that in the form of heater justdescribed the adjustment of the resistance caused by cutting in orcutting out portions of the l wire takes place at such a point as tomake the distribution of the heat as uniform as possible relatively tothe depending members 37. For instance, if a section of wire disposedbetween the connecting-points 51 and 52 be composed at a pointcomparatively remote from i the surfaces to be heated, does notmaterially affect the uniform distribution of the heat where the heat isdesired. This form of heater is of especial value for heatingburnishingirons for ironing the bottoms or soles of boots and shoes andfor treeing-irons used for ironing the uppers of boots and shoes, aswell as for the other uses hereinbefore mentioned.

Having thus described my invention,1 claim as new and desire to secureby Letters Patent- 1. In an electric heater, the combination of a memberto be heated, a coil disposed adjacent to said member for heating thesame, said coil being provided with windings, and conductors connectedwith one of said windings at divers points remote from said member to beheated, said divers points being selected from different parts of awinding remote from said member to be heated, for the purpose ofrendering uniform the distribution of heat within said member to beheated.

2. In an electric heater, the combination of a receptacle ofsubstantially cylindrical form, a winding of substantially cylindricalform encircling the same, said winding being provided with an outermostlayer remote from 1 said receptacle, separate wires connected withdifferent portions of said outermost layer, and means controllable atwill for energizing all of said windings except predetermined portionsof said outermost layer.

3. In an electric heater, the combination of a member to be heated, aresistance-coil disposed adjacent to said member for the purpose ofheating the same, said resistance-coil being provided with a layer ofwire disposed comparatively remote from said member to be heated, andmeans controllable at will for cutting in or out certain predeterminedportions of said layer for the purpose of effecting a 1 uniformdistribution of the heat relatively to said member to be heated.

in testimony whereof I have signed my name to this specification in thepresence of two su bscribing witnesses.

ED\VAR.D PAUL \V Will i El Witnesses:

CHAs. Twnunnn, E. E. WARD.

